December 30, 2007

Predicting the Effect of Wall-Cladding Ventilation on Condensation due to Sun-Driven Moisture: Comparison of Hygrothermal Simulation with Laboratory Testing

By: Liyen Kan, Pinon, Joseph P.

Abstract: Providing for ventilation airflow behind wall claddings has been shown to reduce the risk of condensation due to sun-driven moisture when rain wets an absorptive exterior surface and solar radiation subsequently drives this moisture...

December 30, 2007

Steelwise: Pushing the Envelope

By: James Parker, Alec Zimmer, Hewitt, Christopher M.

Abstract: One of the most challenging details facing structural designers is the support of a building façade. The complexity of this attachment is not to be overlooked, and the entire design team should be engaged in developing a strategy for...

December 30, 2007

Air Barriers in High Interior RH Specialty Buildings: Considerations for Control of Moisture-Laden Air in Museums, Labs, and Natatoriums

By: O'Brien, Sean M., Totten, Paul E.

Abstract: Air barriers in building enclosures are still not widely mandated by building codes in the United States. However, acceptance of incorporating air barriers into new building enclosures is growing within the building design and...

December 30, 2007

Artificial roofing slates and shingles

By: Cash, Carl G., Stephen Condren, Werner Gumpertz

Abstract: Early in the 1980s, manufacturers started to respond to the market desires for a Class A fire-rated steep-sloped roofing material. Other manufacturers sought slate-like roofs that were lower in cost than natural slate. Both groups tried...

December 30, 2007

Structural evaluation and repair of internally damaged concrete

By: Dodge, E.C., Matthew Sherman

Abstract: This paper presents an overview of the effective use of non-destructive testing at two evaluation and repair projects involving concrete structures with internal defects. Frequently, visual inspection is insufficient to locate the...

December 30, 2007

An Update on Problems Associated with Metal-Plate-Connected Wood-Roof Trusses

Abstract: Our practice in forensic engineering includes wood structures. Over time, we have received many calls about buildings with metal-plate-connected wood-roof trusses (trusses). Trusses are used extensively, both within the housing industry...

December 30, 2007

A Guideline for Interpreting AASHTO Specifications to Design or Evaluate Buried Structures with Comprehensive Solution Methods

By: Katona M.G., McGrath, Timothy J.

Abstract: Design engineers and consultants are required to satisfy the criteria set forth in the "AASHTO LRFD Bridge Design Specifications" when designing buried culverts within the national transportation infrastructure. Adherence to...

December 30, 2007

Evaluation of preserved materials reveals cause of column collapse

Abstract: This paper describes an investigation of the partial collapse of a structural steel frame during construction of a shopping mall in December 1999. The accident occurred when an assembly of a 36 ft tall steel column and an 80 ft long...

December 30, 2007

Restoring the Pipeline: CFRP repair of large-diameter pressure pipes

Abstract: Buried, prestressed concrete cylinder pipelines (PCCP) are deteriorating in water utility infrastructure across the country. The use of liners that comprise carbon-fiber-reinforced polymers (CFRP) can provide numerous advantages,...

November 29, 2007

Retrofitting Barrier Exterior Insulation and Finish System: Methodology and Performance Assessment [EIFS]

Also published as "Retrofit of Barrier Exterior Insulation and Finish System: Methodology and Performance Assessment [EIFS]" in Repair, Retrofit, and Inspection of Building Exterior Wall Systems: ASTM STP 1493|Abstract: Barrier-EIFS (...